ID_PFR1_SEC_EXT_MASK 154 boot/arch/arm32/include/arch/cp15.h ID_PFR1_SEC_EXT_MASK = 0xf << 4, ID_PFR1_SEC_EXT_MASK 154 kernel/arch/arm32/include/arch/cp15.h ID_PFR1_SEC_EXT_MASK = 0xf << 4, ID_PFR1_SEC_EXT_MASK 154 uspace/lib/c/arch/arm32/include/libarch/cp15.h ID_PFR1_SEC_EXT_MASK = 0xf << 4,HelenOS homepage, sources at GitHub